Mark Gatiss has claimed that Sherlock fans have changed the way in which the popular BBC series is now filmed.
The show's co-creator revealed that the forthcoming episodes of the BBC detective drama have been largely placed indoors because of the growing amount of fans who turn up to watch the shoots, going on to leak secrets online.
Now known as #setlock, the craze has seen hundreds of fans turn up to photograph and film the show's stars at filming locations, posting everything on Twitter including lines from the series - something the producers hope to now limit.
Gatiss explained to RadioTimes.com: "When we were filming Baker Street exteriors last time, the fact you've got about 300 people behind crash barriers is ... interesting. So we have factored in trying to minimise large scenes outside.
"If you're just drawing up in a taxi and running through a door, it's easier but large dialogue scenes outside are quite tough."
He also said that it's nerve-racking for the actors to film in front of a "live studio audience", and the crew have difficulty avoiding the inclusion of super-fans in the background of shots.
"First of all it gives a lot away, which is a shame, but also just in terms of concentration it's hard when you feel like you're being observed by more than just the crew".
Viewers are now having to wait another 12 months with a Christmas special scheduled for 2015 followed by the fourth series in 2016.
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